[A_Reed]

Technically you have designed a four speed (2 speed on one shaft x 2 speed on the other = 4 possible ratio combinations), unless one of your shifting stages is a 1:1 ratio.

Edit: Looking closer at the image (instead of relying on the description) I can see what you did to make it a 3 speed. Took me a minute to follow the power path from input to output. I still don't see how you get the power routed through the first layshaft though. It appears as though the selection of the input cluster is irrelevant as the center gear is tied to the shaft (AM style) without that cluster selected how do you transfer power to the single input side of the gearbox?